Poly(propylene glycol) 1000, often called PPG 1000, shows up in factories, research labs, and workshops wherever there’s a need for a reliable synthetic polymer. Workers and engineers see it in clear, sometimes slightly hazy liquid form, which makes it pretty easy to handle and mix. The name hints at its structure—linked propylene oxide repeat units, with the “1000” indicating the average molecular weight hovering around 1000 grams per mole. You’ll spot it listed with the chemical formula C3n+1H6n+2On+1 or C3H6O units repeating over and over, making it a flexible building block for chemical processes.
Experts use Poly(propylene glycol) 1000 for good reason. Its viscosity strikes a balance—not so thick you struggle to pour, not so thin it runs like water. Viscosity typically lands around 170-210 mPa·s at 25°C, and the density sits close to 1.01 g/cm³ at the same temperature. You won’t find flakes, pearls, or powders here—this grade is liquid, smooth to pour, easy to weigh, less messy than crystal or solid forms. It dissolves well in water and many organic solvents, a real advantage if you’ve ever blended ingredients for resins or surfactants. You can count on it to stay chemically stable under typical storage conditions, which extends its shelf life in warehouses. Unlike some hazardous substances, Poly(propylene glycol) 1000 doesn’t release strong vapors, and careful handling can avoid accidental slips or spills that risk exposure.
Industry leaders recognize a standard for PPG 1000. Look for reported hydroxyl values in the range of 104-112 mg KOH/g. The purity often exceeds 99%, supporting industries that need minimal contaminants. The Harmonized System (HS) Code usually assigned to Poly(propylene glycol) 1000 sits at 3907.20, which groups it among polyethers. Manufacturers and exporters rely on this number for customs clearance, tariffs, and international logistics. Bulk containers range from liter-sized bottles to drums and Intermediate Bulk Containers (IBC), all designed for efficient movement and minimal product loss.
Poly(propylene glycol) 1000 steps into plenty of roles. In polyurethane elastomers, foam production, lubricants, cosmetic formulations, and specialty coatings, you find it helping as a soft segment or plasticizer. I’ve seen formulators use it to fine-tune flexibility in adhesives and sealants, especially when weather or temperature swings demand dependable performance. Its ability to absorb and control moisture also gives it value in personal care products. By acting as a surfactant intermediate, it plays a part in cleaning products, dispersing grease or dirt in ways that other materials might not handle as well. Many processes value the easy miscibility and smooth viscosity, simplifying large-scale batching and advanced compounding.
Poly(propylene glycol) 1000 rates as safer than many chemicals that share its industrial world. Take care to prevent skin and eye contact—long hours processing this kind of polymer can dry out hands or irritate unprotected skin. Splashes might sting, so gloves, goggles, and good ventilation matter in any facility. This product doesn’t ignite easily compared with solvents or volatile monomers, though spills can become slick hazards, increasing workplace accidents if not properly cleaned. Storage tanks should remain sealed, away from direct sunlight and sources of moisture, keeping contamination low and shelf life long. Disposal follows chemical waste guidelines, with workers trained to avoid stormwater or soil contamination.
While Poly(propylene glycol) 1000 does not pose the acute toxicity risks seen with some industrial solvents, chronic exposure over years might dry out skin or, in rare cases, cause mild sensitization. Respiratory issues rarely occur given its low volatility, but any fine mist or vapor formed during an upset can still cause discomfort for sensitive individuals. It doesn’t break down rapidly in the environment, so responsible disposal always matters—nobody wants to see excess polymer drifting into wastewater where it could accumulate.
Poly(propylene glycol) 1000 begins with propylene oxide, a petrochemical industry staple. It’s not a green chemical by its origins, though many companies are working on improving overall process efficiency and introducing renewable feedstocks. I’ve watched as demand for sustainable materials pushes firms to look at lifecycle and footprint. While current PPG 1000 depends on fossil fuels, ongoing efforts might one day offer an alternative that matches today’s performance and reliability. Until then, the best practice stays rooted in precise use, safe handling, and proper recovery.
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